FargateComputeEnvironment

class aws_cdk.aws_batch.FargateComputeEnvironment(scope, id, *, vpc, maxv_cpus=None, replace_compute_environment=None, security_groups=None, spot=None, terminate_on_update=None, update_timeout=None, update_to_latest_image_version=None, vpc_subnets=None, compute_environment_name=None, enabled=None, service_role=None)

Bases: Resource

A ManagedComputeEnvironment that uses ECS orchestration on Fargate instances.

Resource:: AWS::Batch::ComputeEnvironment
ExampleMetadata:: infused

Example:

# vpc: ec2.IVpc

shared_compute_env = batch.FargateComputeEnvironment(self, "spotEnv",
    vpc=vpc,
    spot=True
)
low_priority_queue = batch.JobQueue(self, "JobQueue",
    priority=1
)
high_priority_queue = batch.JobQueue(self, "JobQueue",
    priority=10
)
low_priority_queue.add_compute_environment(shared_compute_env, 1)
high_priority_queue.add_compute_environment(shared_compute_env, 1)

Parameters:

scope (Construct) –
id (str) –
vpc (IVpc) – VPC in which this Compute Environment will launch Instances.
maxv_cpus (Union[int, float, None]) – The maximum vCpus this ManagedComputeEnvironment can scale up to. Each vCPU is equivalent to 1024 CPU shares. Note: if this Compute Environment uses EC2 resources (not Fargate) with either AllocationStrategy.BEST_FIT_PROGRESSIVE or AllocationStrategy.SPOT_CAPACITY_OPTIMIZED, or AllocationStrategy.BEST_FIT with Spot instances, The scheduler may exceed this number by at most one of the instances specified in instanceTypes or instanceClasses. Default: 256
replace_compute_environment (Optional[bool]) – Specifies whether this Compute Environment is replaced if an update is made that requires replacing its instances. To enable more properties to be updated, set this property to false. When changing the value of this property to false, do not change any other properties at the same time. If other properties are changed at the same time, and the change needs to be rolled back but it can’t, it’s possible for the stack to go into the UPDATE_ROLLBACK_FAILED state. You can’t update a stack that is in the UPDATE_ROLLBACK_FAILED state. However, if you can continue to roll it back, you can return the stack to its original settings and then try to update it again. The properties which require a replacement of the Compute Environment are: Default: false
security_groups (Optional[Sequence[ISecurityGroup]]) – The security groups this Compute Environment will launch instances in. Default: new security groups will be created
spot (Optional[bool]) – Whether or not to use spot instances. Spot instances are less expensive EC2 instances that can be reclaimed by EC2 at any time; your job will be given two minutes of notice before reclamation. Default: false
terminate_on_update (Optional[bool]) – Whether or not any running jobs will be immediately terminated when an infrastructure update occurs. If this is enabled, any terminated jobs may be retried, depending on the job’s retry policy. Default: false
update_timeout (Optional[Duration]) – Only meaningful if terminateOnUpdate is false. If so, when an infrastructure update is triggered, any running jobs will be allowed to run until updateTimeout has expired. Default: 30 minutes
update_to_latest_image_version (Optional[bool]) – Whether or not the AMI is updated to the latest one supported by Batch when an infrastructure update occurs. If you specify a specific AMI, this property will be ignored. Default: true
vpc_subnets (Union[SubnetSelection, Dict[str, Any], None]) – The VPC Subnets this Compute Environment will launch instances in. Default: new subnets will be created
compute_environment_name (Optional[str]) – The name of the ComputeEnvironment. Default: - generated by CloudFormation
enabled (Optional[bool]) – Whether or not this ComputeEnvironment can accept jobs from a Queue. Enabled ComputeEnvironments can accept jobs from a Queue and can scale instances up or down. Disabled ComputeEnvironments cannot accept jobs from a Queue or scale instances up or down. If you change a ComputeEnvironment from enabled to disabled while it is executing jobs, Jobs in the STARTED or RUNNING states will not be interrupted. As jobs complete, the ComputeEnvironment will scale instances down to minvCpus. To ensure you aren’t billed for unused capacity, set minvCpus to 0. Default: true
service_role (Optional[IRole]) – The role Batch uses to perform actions on your behalf in your account, such as provision instances to run your jobs. Default: - a serviceRole will be created for managed CEs, none for unmanaged CEs

Methods

apply_removal_policy(policy)

Apply the given removal policy to this resource.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you’ve removed it from the CDK application or because you’ve made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

Parameters:

policy (RemovalPolicy) –

Return type:

None

to_string()

Returns a string representation of this construct.

Return type:: str

Attributes

compute_environment_arn: The ARN of this compute environment.

compute_environment_name: The name of the ComputeEnvironment.

connections: The network connections associated with this resource.

enabled

Whether or not this ComputeEnvironment can accept jobs from a Queue.

Enabled ComputeEnvironments can accept jobs from a Queue and can scale instances up or down. Disabled ComputeEnvironments cannot accept jobs from a Queue or scale instances up or down.

If you change a ComputeEnvironment from enabled to disabled while it is executing jobs, Jobs in the STARTED or RUNNING states will not be interrupted. As jobs complete, the ComputeEnvironment will scale instances down to minvCpus.

To ensure you aren’t billed for unused capacity, set minvCpus to 0.

env

The environment this resource belongs to.

For resources that are created and managed by the CDK (generally, those created by creating new class instances like Role, Bucket, etc.), this is always the same as the environment of the stack they belong to; however, for imported resources (those obtained from static methods like fromRoleArn, fromBucketName, etc.), that might be different than the stack they were imported into.

maxv_cpus

The maximum vCpus this ManagedComputeEnvironment can scale up to.

Note: if this Compute Environment uses EC2 resources (not Fargate) with either AllocationStrategy.BEST_FIT_PROGRESSIVE or AllocationStrategy.SPOT_CAPACITY_OPTIMIZED, or AllocationStrategy.BEST_FIT with Spot instances, The scheduler may exceed this number by at most one of the instances specified in instanceTypes or instanceClasses.

node: The tree node.

replace_compute_environment

Specifies whether this Compute Environment is replaced if an update is made that requires replacing its instances.

To enable more properties to be updated, set this property to false. When changing the value of this property to false, do not change any other properties at the same time. If other properties are changed at the same time, and the change needs to be rolled back but it can’t, it’s possible for the stack to go into the UPDATE_ROLLBACK_FAILED state. You can’t update a stack that is in the UPDATE_ROLLBACK_FAILED state. However, if you can continue to roll it back, you can return the stack to its original settings and then try to update it again.

The properties which require a replacement of the Compute Environment are:

security_groups: The security groups this Compute Environment will launch instances in.

service_role: The role Batch uses to perform actions on your behalf in your account, such as provision instances to run your jobs.

spot

Whether or not to use spot instances.

Spot instances are less expensive EC2 instances that can be reclaimed by EC2 at any time; your job will be given two minutes of notice before reclamation.

stack: The stack in which this resource is defined.

tags: TagManager to set, remove and format tags.

terminate_on_update

Whether or not any running jobs will be immediately terminated when an infrastructure update occurs.

If this is enabled, any terminated jobs may be retried, depending on the job’s retry policy.

update_timeout

Only meaningful if terminateOnUpdate is false.

If so, when an infrastructure update is triggered, any running jobs will be allowed to run until updateTimeout has expired.

update_to_latest_image_version

Whether or not the AMI is updated to the latest one supported by Batch when an infrastructure update occurs.

If you specify a specific AMI, this property will be ignored.

Note: the CDK will never set this value by default, false will set by CFN. This is to avoid a deployment failure that occurs when this value is set.

Static Methods

classmethod from_fargate_compute_environment_arn(scope, id, fargate_compute_environment_arn)

Reference an existing FargateComputeEnvironment by its arn.

Parameters:

scope (Construct) –
id (str) –
fargate_compute_environment_arn (str) –

Return type:

IFargateComputeEnvironment

classmethod is_construct(x)

Checks if x is a construct.

Use this method instead of instanceof to properly detect Construct instances, even when the construct library is symlinked.

Explanation: in JavaScript, multiple copies of the constructs library on disk are seen as independent, completely different libraries. As a consequence, the class Construct in each copy of the constructs library is seen as a different class, and an instance of one class will not test as instanceof the other class. npm install will not create installations like this, but users may manually symlink construct libraries together or use a monorepo tool: in those cases, multiple copies of the constructs library can be accidentally installed, and instanceof will behave unpredictably. It is safest to avoid using instanceof, and using this type-testing method instead.

Parameters:: x (Any) – Any object.
Return type:: bool
Returns:: true if x is an object created from a class which extends Construct.

classmethod is_owned_resource(construct)

Returns true if the construct was created by CDK, and false otherwise.

Parameters:

construct (IConstruct) –

Return type:

bool

classmethod is_resource(construct)

Check whether the given construct is a Resource.

Parameters:

construct (IConstruct) –

Return type:

bool